#D4183B
Closest named color: Crimson (#DC143C). oklch(55.8% 0.214 20), rgb(212, 24, 59).
Aa
White text reads best on this color (5.25:1).
About this color
#D4183B is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.214 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.016 away. White text reads best on it, at 5.25:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #D4183B |
| RGB | rgb(212, 24, 59) |
| HSL | hsl(349, 80%, 46%) |
| OKLCH | oklch(55.8% 0.214 20) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #D4183B | 5.25:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #D4183B | 3.99:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #D4183B text on white | 5.25:1 | AA | Lc 74.0 | Content text, not long reading |
| #D4183B text on black | 3.99:1 | AA large text | Lc -27.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FBCCCB
oklch(88.6% 0.053 19.6)
-
Step 300
300
#F9A8A7
oklch(81% 0.096 20.2)
-
Step 400
400
#F17478
oklch(70.6% 0.154 19.9)
-
Step 500
500
#E84755
oklch(63.1% 0.197 20.1)
-
Step 600
600 (this color)
#D4183B
oklch(55.8% 0.214 20)
-
Step 700
700
#B6002D
oklch(49.1% 0.197 20.1)
-
Step 800
800
#940C26
oklch(42.7% 0.164 20)
-
Step 900
900
#771823
oklch(37.7% 0.129 20.1)
-
Step 950
950
#461115
oklch(27% 0.081 20.2)
#D4183B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #59533A | 0.238 |
| Deuteranopia (no green cones) | #867935 | 0.215 |
| Tritanopia (no blue cones) | #E9002A | 0.043 |
| Achromatopsia (no color) | #6C6C6C | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D4183B
#D4183B
oklch(55.8% 0.214 20)
- #00848A
#00848A
oklch(55.8% 0.095 200.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #D4183B, closest first.
No curated palette has a color within ΔE 0.04 of #D4183B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.016
- Cherry #CF0234 ΔE 0.017
- Lipstick #D5174E ΔE 0.024
- Ruby #CA0147 ΔE 0.034
- Lipstick Red #C0022F ΔE 0.047
- Rose Red #BE013C ΔE 0.052
- Imperial Red #E63946 ΔE 0.055
- Cerise #DE0C62 ΔE 0.056
Use #D4183B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.